EXT4-fs warning (device loop5): ext4_empty_dir:3042: inode #11: lblock 0: comm syz-executor: error -12 reading directory block
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kernel BUG at fs/ext4/ext4.h:2985!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 423 Comm: syz-executor Not tainted 5.4.292-syzkaller-00021-gcd8e74fa0fa3 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2985 [inline]
RIP: 0010:ext4_free_blocks+0x1fc1/0x2030 fs/ext4/mballoc.c:4857
Code: 08 48 89 df e8 00 b2 cc ff 49 83 7e 18 00 74 31 e8 c4 b7 9e ff 49 83 c6 18 e9 6b ff ff ff e8 b6 b7 9e ff 0f 0b e8 af b7 9e ff <0f> 0b e8 a8 b7 9e ff 0f 0b e8 a1 b7 9e ff eb 36 e8 9a b7 9e ff 0f
RSP: 0018:ffff8881d993f4c0 EFLAGS: 00010293
RAX: ffffffff81c0c731 RBX: 0000000000000003 RCX: ffff8881ed89bf00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000003
RBP: ffff8881d993f6d0 R08: ffff8881dcc28b50 R09: 0000000000000000
R10: 0000000000000406 R11: 0000000000000000 R12: ffff8881eab68000
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8881dcc28b50
FS:  000055558594c500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555585977528 CR3: 00000001d99b4000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 ext4_remove_blocks fs/ext4/extents.c:2743 [inline]
 ext4_ext_rm_leaf fs/ext4/extents.c:2896 [inline]
 ext4_ext_remove_space+0x20b1/0x5850 fs/ext4/extents.c:3142
 ext4_ext_truncate+0x157/0x1e0 fs/ext4/extents.c:4689
 ext4_truncate+0xa8f/0x1270 fs/ext4/inode.c:4641
 ext4_evict_inode+0x10d5/0x1a30 fs/ext4/inode.c:308
 evict+0x465/0x880 fs/inode.c:610
 iput_final fs/inode.c:1652 [inline]
 iput+0x67d/0x810 fs/inode.c:1678
 d_delete_notify include/linux/fsnotify.h:230 [inline]
 vfs_rmdir+0x2b7/0x3e0 fs/namei.c:4040
 do_rmdir+0x23c/0x480 fs/namei.c:4088
 __do_sys_unlinkat fs/namei.c:4252 [inline]
 __se_sys_unlinkat fs/namei.c:4246 [inline]
 __x64_sys_unlinkat+0xb6/0xe0 fs/namei.c:4246
 do_syscall_64+0xcf/0x170 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x5c/0xc1
RIP: 0033:0x7fc4abe30f47
Code: 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 07 01 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffedf4a4888 EFLAGS: 00000207 ORIG_RAX: 0000000000000107
RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 00007fc4abe30f47
RDX: 0000000000000200 RSI: 00007ffedf4a5a30 RDI: 00000000ffffff9c
RBP: 00007fc4abeb389d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000207 R12: 00007ffedf4a5a30
R13: 00007fc4abeb389d R14: 000000000000a636 R15: 00007ffedf4a7bf0
Modules linked in:
---[ end trace c12f9b812a5d955e ]---
RIP: 0010:ext4_get_group_info fs/ext4/ext4.h:2985 [inline]
RIP: 0010:ext4_free_blocks+0x1fc1/0x2030 fs/ext4/mballoc.c:4857
Code: 08 48 89 df e8 00 b2 cc ff 49 83 7e 18 00 74 31 e8 c4 b7 9e ff 49 83 c6 18 e9 6b ff ff ff e8 b6 b7 9e ff 0f 0b e8 af b7 9e ff <0f> 0b e8 a8 b7 9e ff 0f 0b e8 a1 b7 9e ff eb 36 e8 9a b7 9e ff 0f
RSP: 0018:ffff8881d993f4c0 EFLAGS: 00010293
RAX: ffffffff81c0c731 RBX: 0000000000000003 RCX: ffff8881ed89bf00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000003
RBP: ffff8881d993f6d0 R08: ffff8881dcc28b50 R09: 0000000000000000
R10: 0000000000000406 R11: 0000000000000000 R12: ffff8881eab68000
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8881dcc28b50
FS:  000055558594c500(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555585977528 CR3: 00000001d99b4000 CR4: 00000000003406b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400